[2] Eighth-grade student Akash Yadav had gotten into a fight with Tyagi, but it was resolved by school authorities.
The school had organised sports day on 9 December 2007 and Yadav, along with his friend, planned to shoot Tyagi, but their plan failed as Tyagi went home early.
Yadav instead decided to shoot Tyagi on Tuesday as Monday was a holiday.
On 11 December, Yadav stole his father's gun, that was left unlocked, and hid it in the school washroom under a toilet seat.
At the time of dispersal in the afternoon, Tyagi was going to his bus room when Yadav called out to him from behind.